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Finding the Fourth Proportional to 324,087.60, 486,568.80 and 257,602.80

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Solution

The fourth proportional to 324,087.60, 486,568.80 and 257,602.80 is: 386,751.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,087.60 : 486,568.80 = 257,602.80 : x
  2. Step 2: Convert to fraction form
    324,087.60/486,568.80 = 257,602.80/x
  3. Step 3: Cross multiply
    324,087.60x = 486,568.80 × 257,602.80
  4. Step 4: Simplify right side
    324,087.60x = 125,341,485,272.64
  5. Step 5: Solve for x
    x = 125,341,485,272.64/324,087.60
  6. Step 6: Final answer
    x = 386,751.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.